Pipe-coupling and valve.



PATENTED JAN. 2a, 1908.

I VEN-FQQ'. FRANK FlKlRcHr-ioFF,

ATTORNEYS.

P. R. KIROHHOPF. PIPE COUPLING AND VALVE.

APPLICATION FILED SEPT.23,1907- mm ,M AE

nlllilgm rn WITN ESSESZ zmzmaf amdo w MW UNITED I STATES FRANK R.KIRCHHOFF, OF DETROIT, MICHIGAN.

PIPE-confines AND VALVE.

Specification. of Letters I'atent.- Application filed September 23,1907.Serial No. 394.103.

Patented-Jan. as, 1908.

To all whom it may concern:

Be it known that I, FRANK R. KIRcH- HOFF, a citizen of the United.States of America, residing atDetroit, in the county of Wayne and Stateof Michi an, have invented certain new and use 1 Improvements in Pi e-Couplin'gs and Valves, of whlch the fo owing is a specification,reference being had therein to the accompanyingand'valve embodyingfeatures ofthe invention. Fig. 2 is a view in side elevation-of thecoupl ng. Fig, 3 is a view in detail of a packing ring. Fig. 4 is a viewin detail of a guide br dge. Fig. 5 is a view in detail 'ofa modifiedform of valve closure.

In the drawings, a cylindrical valve casing -1 which forms one member ofthe coupling has an a ertured valve seat 2 mediate its ends pre erablyintegral with its wall, on Wl'llCh a conicalyalve clo's'ure3 isyieldingly held by a spring 4 encircling a stem 5 secured to or integralwith the closure, the spring being confined by a guide bridge 6 screwedinto the casing in whichxthe stem is longitudinally movable. An annularflange 7 on the closure projects through the valve seat and ,a pluralityof apertures 8 are formed therein. The casing is counterbored at its endopposite the bridge and an annular washer 9 is seated at the bottom ofthe resultant recess. A packing ring 10 of rubber or other suitableelastic material is secured against-the washer 9 by an outer washer 11and exteriorly screw-threaded nut 12 engag nut being l washer. The bodyof the packing ring is reduced between its ends by a peri heralgroove'13. pair of se mentalelical anges-14 wlth' an interva between theiradjacent ends are integrally formed on the counterbored end of thecasing and are in effect ortions of a double screw-thread.

.The 0t 'er member of the coupling is a hollow cylindrical spindle 15having a reduced inner end 16 adapted to closely fit the apertures ofthe packing ring 10 and its washers 11 and 12, an

to'abut against the flange 7 on the the casing, the aperture of thearger than the aperture of the valve closure 3 when the shoulder betweenthe body of the spindle and the reduced part rests on the outer washer11.

Oppositely extending radial wings 17, are

integrally formed 01'' secured on the spindle with dependent inturnedends 18 adapted to drop between the ends of the casing flanges 14 andhook under them. when given a art turn, the parts being" so adjustedthat t eir action rojects the spindle far enough against t e valveclosure 3 to raise the latter from its seat and allowfree passage fromthe interior of the spindle through the valve closure flange-aperturesand past the valve seat. This twisting of the spindle-into the casing'forces in the outer packing ring washer and compresses the ring, thelatter buckling inwardly and tightly gripping the spindle with itsreduced-.middle portion and s ringing back and allowing the readywithrawal of the spindle when the latter is disengaged from the flange.As aresult a packing jointis obtained which does not leak under heavyair pressure without any undue multiplication of arts or complexity ofconstruction, while t e life" of the packing is increased by thekneading given It in use, thus preventing the hardening and loss ofelasticity which occurs when the packing is not disturbed or moved. r

The valve closure may, if preferred, be flat as indicated in Fig. 5,with a suitable packing rin '18, and a cylindrical extension .19 assl trough the valve seat 2.

at claim as my invention is A combined pipe coupling and valve com-'prising a cylindrical casing, a pair of segmental helical flanges ne'arone end thereof, a

' washer seated in an axial counterbored recess at the flanged end ofthe casing, an elastic packing ring on the washer having an outerperipheral groove between its ends, a washer resting on the outer end ofthe ring, a check-nut in the casing limiting the outward movement of theouter washer, a tubular spindle'reciprocable throu h the check-nuthaving arms adapted to etachably interlock with the flange and a reducedextension extending through the. nuts and ring, an apertured valvebridge removably secured in the other end of the casing, .an aperturedvalve seat between the bridge andcasingin axial alinement therewith, avalve closure having a stem'reci rocable in the bridge, and an annularper orated flange extending through the seat and abutting the spindleextension, and a spring encircling the stem in compression between thebridge and 010- sure, said spindle being adapted to longitudinallycompress the mug and to force the valve closure from the seat when itsarms are interlocked with the casing flanges, and said ring beingadapted to buckle inwardlyand 4 In testimony w ereof I affix mysignature in presence of two witnesses.

FRANK R. KIRCHHOFF. Witnesses:

A. M. Donn, C. R. STIOKNEY.

